Check The Free-Wheel Configuration - Genie GS-3390 Service Manual

July 2007
REV E
D-2
Check the Free-wheel
Configuration
Genie specifications require that this procedure be
performed every 1000 hours or annually,
whichever comes first.
Proper use of the free-wheel configuration is
essential to safe machine operation. The
free-wheel configuration is used primarily for
towing. A machine configured to free-wheel without
operator knowledge may cause death or serious
injury and property damage.
Collision hazard. Select a work
site that is firm and level.
Component damage hazard. If the
machine must be towed, do not
exceed 2 mph / 3.2 km/h.
1 Chock the wheels at the steer end of the
machine.
2 Center a lifting jack of ample capacity
(20,000 lbs / 10,000 kg) under the drive chassis
between the wheels at the non-steer end of the
machine.
3 Lift the wheels off the ground and place blocks
under the drive chassis for support.
Crushing hazard. The chassis
could fall if not properly supported.
4 Disengage the drive hubs by turning over the
drive hub disconnect caps on each wheel hub
at the non-steer end. Refer to the illustration.
5 Manually rotate each wheel at the non-steer
end.
Result: Each wheel should rotate with minimum
effort.
Part No. 72863
Section 3 • Scheduled Maintenance Procedures
6 Engage the drive hubs by turning over
the hub disconnect caps. Rotate each wheel to
check for engagement. Raise the machine and
remove the blocks. Lower the machine.
7 Chock the wheels at the non-steer end of the
machine.
8 Center a lifting jack of ample capacity
(20,000 lbs / 10,000 kg) under the drive chassis
between the wheels at the steer end.
9 Lift the wheels off the ground and place blocks
under the drive chassis for support.
10 Disengage the drive hubs by turning over the
drive hub disconnect caps on each wheel hub
at the steer end.
11 Manually rotate each wheel at the steer end.
Result: Each wheel should rotate with minimum
effort.
12 Engage the drive hubs by turning over
the hub disconnect caps. Rotate each wheel to
check for engagement. Raise the machine and
remove the blocks. Lower the machine.
GS-3390 • GS-4390 • GS-5390
CHECKLIST D PROCEDURES
Collision hazard. Failure to engage
the drive hubs could result in
death or serious injury and
property damage.
Crushing hazard. The chassis
could fall if not properly supported.
Collision hazard. Failure to engage
the drive hubs could result in
death or serious injury and
property damage.
disengaged position
engaged position
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